The support team (whose size is limited) focuses on sustainability and accessibility of core functionalities, thus we're not supporting those components any more:

Mobile Devices, or XtreemOS-MD

SAGA connectors, or XOSAGA

Checkpointing, including BLCR

Virtual Nodes, or dixi-aem-vnodes

Kerrighed and LinuxSSI

Main changes for version 2.1 (since version 2.0)

A new configuration tool: improved installer with the new xosautoconfig tool to greatly simply and automate installation of XtreemOS instances.

A number of high impact bug fixes, along with work on stability and correctness.

A new version of XtreemFS: XtreemFS 1.2, which has a number of new features along with enhanced performance and stability.

XtreemOS-MD (Mobile Device): this new version integrates XtreemOS on Internet Tablets, beginning with the Nokia N8xx. This makes it possible to launch jobs and interact with XtreemOS resources via a zero configuration client.

Virtual Nodes suppport: a framework to provide fault tolerance for grid applications by replicating them over multiple nodes.